Question: What is the cheapest office building in the United States ?
Paraphrase: What is the least expensive american building?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q1021645 . ?ent wdt:P2130 ?obj . ?ent wdt:P17 wd:Q30} ORDER BY ASC(?obj)LIMIT 5 
Answer: Penn Center Suburban Station, One Charles Center, Transamerica Pyramid, Wells Fargo Center, Empire State Building